A local shop is maintained at 101.3 kPa and 19oC. The air inside the shop is forced to leave at a rate of 150 m3/h as a result of outdoor air at 8oC infiltrating into the shop through the cracks. Determine the rate of net energy loss of the shop due to mass transfer. The gas constant of air is R = 0.287 kPa•m3/kg•K

Q: A house is maintained at 1 atm and 24°C, and warm air inside a house is forced to leave the house at…

A: Given data: Pressure, P = 1 atm Air Temperature, Tin = 24°C Rate of flow of warm gas from inside of…

Q: L Steam flows steadily into a turbine with a mass flow rate of 20 kg/s at 6 MPa and 600°C with a…

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Q: A steam at 8 kPa with an entropy of 6.4052 kJ/ kg - k is the output after the condensing process.…

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Q: 1-Water vapor enters an adiabatic turbine at 6.5MPa pressure and 400 ° C temperature, with a mass…

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Q: In a gas turbine plant, air enters the compressor at ambient conditions of 100 kPa and 25°C with a…

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Q: A fluid enters a machine at 169.56 m/s, 767.78 kPa, and with a specific volume of 0.103 m^3/kg. The…

A: GIVEN DATA AT INLET C1 = 169.56 m/s P1=767.78 KPa v1=0.103 m3/kg Heat Loss Q=20.9 KJ/kg At Outlet…

Q: A variable-load piston-cylinder device contains air (cp = 1.005 kJ/kgK; cv = 0.718 kJ/kgK) at 500…

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Q: Steam at a temperature of 2100C has a specific entropy of 7.1167 kJ/kg-K. Determine the pressure,…

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Q: Steam at a temperature of 210C has a specific entropy of 7.1167 kJ/kg-K. Determine the pressure,…

A: We need to use steam table to find the pressure, internal energy, enthalpy and volume as the…

Q: 5-24 A house is maintained at 1 atm and 24°C, and warm air inside a house is forced to leave the…

A: Given:The pressure in the house is the temperature inside the house is the discharge of the air is…

Q: Hydrogen is stored in a tank (volume is 2.0 m) at a pressure of 500kPa and a temperature of 300K. A…

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Q: A 2.18 kg of air at 22.89 C underwent an isobaric process wherein its initial volume of 1.64 m3 was…

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Q: A pipeline carries a flow of 60.34 m3/min of steam at 1.00 MPa and 20.09°C superheat. Determine the…

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Q: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A: To find: The electrical power produced. Given: The seam enters the turbine at P1=8 MPa. The exit…

Q: Carbon dioxide contained in a piston–cylinder device is compressed from 0.3 to 0.1 m3 . During the…

A: Given Data: The initial volume is V1 = 0.3 m3. The final volume is V2 = 0.1 m3. The p-v relation is…

Q: A tank of volume 0.05 m contains a mixture of saturated water and saturated steam at 200°C. The mass…

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Q: There is 1.57 kg of gas, for which R= 432.5 J/kg•K and k= 1.34, that undergo a non-flowmetric…

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Q: A steam condenser is supplied with steam, which has a specific enthalpy (calculated above 0 C) of…

A: Given, At inlet condition of condenser,h1=2.2MJ/kgv1=70m/smass flow rate, m˙=2200kg/hAt outlet…

Q: A long roll of 1-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (ρ = 7854 kg/m3 ) coming off a…

A: Given: The roll thickness is t=0.5 cm. The roll width is w=1 m. The density of the manganese steel…

Q: A 2.21 kg of air at 22.46 C underwent an isobaric process wherein its initial volume of 1.73 m3 was…

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Q: A piston–cylinder device contains 25 g of saturated water vapor that is maintained at a constant…

A: Given data: Refer to the table “saturated pressure table” to obtain the enthalpy. Calculate the…

Q: A constant-pressure R-134a vapor separation unit separates the liquid and vapor portions of a…

A: Given: The flow rate of the R134a, Q = 6 L/s = 0.006 m^3/s The pressure of the R134a, P = 320 kPa…

Q: A liquid R-134a bottle has an internal volume of 0.0018 m^3 initially, it contains 0.88 kg of R-134a…

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Q: Steam enters a diffuser at 20 psia and 240°F with a velocity of 900 ft/s and exits as saturated…

A: Given: The inlet pressure of the steam is P1=20 psia. The inlet temperature of the steam is T1=…

Q: In an open system, 500 kg/h of air is being compressed from 100 kPa at  280 K to 600 kPa and 400 K.…

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Q: A 2.18 kg of air at 22.89 C underwent an isobaric process wherein its initial volume of 1.64 m3 was…

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Q: The components of an electronic system dissipating 180 W are located in a 1-m-long horizontal duct…

A: (a) The properties of air at 1 atm pressure and bulk modulus temperature 35 oC are given as, The…

Q: Air enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is…

A: Pipe diameter, d=28 cm=0.28 mAir inlet condition: P1=200 kPa, T1=20oC, V1=5 m/sAir exit condition:…

Q: A house is maintained at 1 atm and 19oC, and warm air inside a house is forced to leave the house at…

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Q: Steam at a temperature of 210°C, has a specific entropy of 7.1167 kJ/kg-K. Determine the specific…

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Q: Define the mechanisms of entropy transfer for a general system.

A: There are basically two forms in which entropy is transferred namely through heat transfer &…

Q: Water is contained in a constant volume tank as a saturated mixture at 90 degrees C. When it is…

A: Given data:- Constant volume tank Initial condition:- Saturated mixture at temperature  =90°C Final…

Q: A tank of volume 0.05 m' contains a mixture of saturated water and saturated steam at 200°C. The…

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Q: A 0.08-m rigid tank initially contains saturated water vapor at 180 °C. The tank is connected by a…

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Q: Liquid water, at 250 kPa and 20 °C, is heated in a chamber by mixing with superheated steam, at 250…

A: GivenPressure P=250kpamass flow rate m˙=5kg/sTemperature, T1=20°CT2=350°CT3=55°C

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.